Manufacture of boot or shoe caps.



V. PREY. MANUFACTURE OF BOOT 0R SHOE GAPS. APPLICATION FILED APR. 13,1908.

976,45 1 Patented Nov. 22, 1910.

UNTEI) sTATEs PATENT OFFICE.

VICTOR FREY, 0F BONNDORF, GERMANY, ASSIGNOR T0 'SGI-IUHFABRIK BONNDOBFGEBR'tl'DER KRIECHLE, OF BONNDORF, GERMANY.

MANUFACTURE OF BOOT 0R SHOE CAPS.

, Specifieation of f letters Patent. Patnted NOV, 22, 1910.

Application filed April 13, 1908. Serial No. 426,887.

To all whom it may concern:

Be it known that I, VICTOR FREY, a subject of the German Emperor,residing at Bonndorf, Germany, have invented certain new and usefulImprovements in the Manufao' ture of Boot or Shoe Caps, of which thefollowing is a specification.

The present invention relates to improvements in the manufacture of bootor shoe caps.

A well known step in the art consists in coating or saturating thestiffening, i. e. the

piece of fabric to be interposedbetween the vamp and the lining of shoeand boot caps, with a solution of celluloid, and to then unite the threeparts while still wet. This procedure has the great disadvantage thateachstiffeni'ng must be treated individually on either side with thecelluloid, which requires on the one hand careful, and for that reasonsomewhat cumbersome and time-consuming handling, and on the other handcarries with it a considerable waste of celluloid. The object of thisinvention is to do away with this disadvantage.

In carrying out my invention, I spread a thin film or layer, ofcelluloid over either side of a relatively large piece of fabric. I thenallow the solvent to evaporate, or if applied in heated state, I allowthe coating to cool off, and then stamp out of the stiffened fabric theparabolic-segmental shaped cap veloped upon changing from the liquidinto the solid state, the stiffening is dipped for a few moments into,or in some other manner treated with, one of the well known solvents,for instance amyl acetate, after the vamp and the lining have previouslybeen folded back to expose both sides of the stiffening. As a result,only the surface ofthe celluloid coating is softened and becomessufficiently stickyto unite under slight pressure with the and thelining to an exceedingly reworlnnan to work very rapidly and cleanly,wlthout danger bf spattering the vamp with celluloid. The evaporationvarying greatly with the solvents used, it is an easy matter to adaptcertain solutions to the quickness required for the operation, or tothat attained by a certain operator.

have illustrated my invention as far as Y possible in the accompanyingdrawing, in

which- Figure .1 represents aplan View of a shoe cap made in accordancewith my invention, prior to attachment to the shoe, portions of, theintermediate and outer layer being broken away. Fig. 2 represents anexaggerated sectional view to show the relative positions of the severallayers.

Referring to the drawing by reference characters, 1 indicates the outerlayer of leather, 2 the interposed layer which constitutes thestiffening, composed, as'hereinbefore described, of a piece of fabrictreated with celluloid in the manner described, and 3 indicates thelining of any ordinary or approved material. I

in the exaggerated sectional view in Fig. 2, the wave line 4 is thepiece of fabric in the intermediate layer or stiffening which, by meansof the process described, is treated with celluloid, saturating it andforming a coating on either side, as at 5-5. The three layers are cut toa proper shape to form the toe cap and secured together by stitching asat 6 in Fig. I.

i What i claim and desire to secure by Letters Patent is 1. Thehereindescribed process of manufacturing boot and shoe caps, comprising.

coating the stiffening on either side with celluloid, partly uniting thestlffening thus coated with the vamp and the lining, exposing the sidesof the stiffening to a solvent and then wholly uniting the parts,substantially as described.

2. The herein described process for the manufacture of boot or shoecaps, comprising coating the stiffening on either side with celluloid,drying and cooling the stiffening, I

partly uniting the vamp, the stiffening and the lining, then renderingthe celluloid surfaces sticky, and, finally uniting the said threeparts, substantially as described.

3. Theherein described process for the manufacture of boot or shoe caps,comfirisuniting the parts in suitable manner, sub- 1ng coatingstiffening fabric with celluloid, stantially as described. 10

- allowing it to dry and cool, stamping out In testimony whereof I aflixmy signasuitably shaped cappieces, partly uniting ture inpresence of twowitnesses.

the latter with the vamp and the lining, ex K VICTOR FREY. posing bothsides of said stiffening, render- Witnesses: Y ing the surfaces thereofsticky by causing a I EUGEN TREIBER,

suitable solvent to act. on them, and 'then ARTUR GROSGKUP.

